Rather than finish out his full final term in Congress, House Majority Leader Rep. Eric Cantor will resign from Congress effective August 18, the Republican congressman said Thursday.

Cantor, whose term in office would have extended through a lame duck session until January of next year, asked Virginia Governor Terry McAuliffe to schedule a special election to be held on Election Day, November 4, to pick his replacement. With Cantor stepping down early, the winner of that special election will take Cantor’s old seat immediately rather than having to wait until the next Congress convenes to begin the new term.

“I want to make sure that the constituents in the Seventh District will have a voice in what will be a very consequential lame-duck session,” Cantor said in an interview with the Richmond Times-Dispatch. “That way he will also have seniority, and that will help the interests of my constituents (because) he can be there in that consequential lame-duck session,” Cantor said.

A once-rising star in the GOP and likely next in line for Speaker of the House, Cantor’s political fortunes were reversed after his stunning defeat in a June GOP primary.

In the contest to take over Cantor’s seat, economics professor Dave Brat—who defeated Cantor for the GOP nomination in June—will square off against Democrat Jack Trammell. Both men are professors at the same school, Randolph-Macon College.